addendum, was very unclear and couldn't really be determined where that [speaker not understood]. he he what relying on the written word. in the letter that was just presented to you, dated today february 14, mr. carp has written a supplemental letter that, you know, clarifies your question in that he said irrespective of the depth, his professional opinion is that whether the box is at 42 feet or 75 feet, because the water table is only fairly shallow, i can't -- i'm not an expert on the geotechnical issues. but i think the groundwater table is somewhere 8 feet below the grade. so that whether the box is at 42 feet below grade or 75, the same hydraulic pressures, the same impacts on adjacent buildings exist. so, you might want to read that letter, one-page letter to understand the technical issues better. >> okay, thank you.